Empty bottle detection mechanism for small-capacity bottled products

Abstract

The utility model discloses an empty bottle detection mechanism for small-capacity bottled products, which comprises a belt conveying line, a static capacitance sensor, a photoelectric sensor, an air cylinder removing assembly, a proximity switch sensor, a defective product cache frame, a product mold assembly and a controller, and a limiting guardrail is arranged on the belt conveying line along the conveying direction of the belt conveying line; the electrostatic capacitance sensor, the photoelectric sensor, the air cylinder removing assembly and the proximity switch sensor are sequentially arranged on one side of the belt conveying line through the support in the conveying direction, the electrostatic capacitance sensor and the photoelectric sensor are arranged adjacently, and the air cylinder removing assembly and the proximity switch sensor are arranged adjacently. The air cylinder removing assembly and the defective product temporary storage frame are oppositely arranged. According to the empty bottle detection mechanism for the small-capacity bottled product, whether a product exists in a sealed non-transparent product or the height of the liquid level of the product is distinguished by detecting the capacitance generated by the product and the electrode, and the product is rejected in cooperation with other sensors and mechanisms, so that the product quality is guaranteed, and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to an empty bottle detection mechanism for small-capacity bottled products. Background Technology

[0002] Small-capped bottled products (ampoules, screw-capped bottles with a capacity between 1ml and 5ml) require quality control during production. The sealed products must be inspected to ensure the filling volume meets requirements. These products have the following characteristics:

[0003] (1) The product has been sealed after filling;

[0004] (2) High product weight accuracy (1.5ml product weight is 1.5g-2g);

[0005] (3) To improve the appearance quality of products, some product containers are opaque (so they cannot be inspected visually);

[0006] (4) The container is fragile (special protection is required during the testing process, and it must be kept in a fixed position or tested manually);

[0007] (5) The bottle has a small diameter and is prone to tipping over during transport if there is no support such as a mold, which will affect the subsequent processes that need to be carried out after inspection.

[0008] In current production processes, considering the characteristics of small-capacity bottled products, the filling volume inspection is typically performed manually or using complex high-speed checkweighing equipment.

[0009] (1) Manual checkweighing: The product to be inspected is placed on the weighing scale by hand, the test parameters are read and compared with the standard parameters to determine whether the filling volume of the small-capacity bottled product meets the requirements.

[0010] (2) Mechanical equipment checkweighing: The product is moved to the weighing sensor through a mechanical structure, triggering the weighing sensor to obtain the weight information of the product, and outputting qualified products and rejecting unqualified products.

[0011] Due to the characteristics of small-capacity bottled products—high weight accuracy, fragile containers, and small bottle diameters—they are prone to tipping over during transport without support such as molds, affecting subsequent processes after inspection. Existing manual weighing methods are inefficient and prone to visual fatigue or false positives. Mechanical weighing equipment, mostly dynamic, increases equipment cost due to the lightweight and high-precision nature of the products. The fragility and small diameter of the containers necessitate the use of protective molds or other carriers for transport, significantly increasing equipment costs and reducing stability and compatibility. Such equipment is also expensive to manufacture. Utility Model Content

[0012] The purpose of this invention is to overcome the shortcomings of the prior art and provide an empty bottle detection mechanism for small-capacity bottled products. It distinguishes whether there is product or the level of liquid in a sealed, opaque product by detecting the capacitance generated between the product and the electrode. In conjunction with other sensors and mechanisms, it rejects products to ensure product quality and improve detection efficiency.

[0013] The technical solution to achieve the above objective is: an empty bottle detection mechanism for small-capacity bottled products, comprising a belt conveyor, an electrostatic capacitance sensor, a photoelectric sensor, a cylinder rejection assembly, a proximity switch sensor, a defective product buffer rack, a product mold assembly, and a controller, wherein:

[0014] Limit guardrails are installed along the conveying direction of the belt conveyor.

[0015] The electrostatic capacitive sensor, photoelectric sensor, cylinder rejection assembly, and proximity switch sensor are sequentially mounted on one side of the belt conveyor line via a bracket along the conveying direction, with the electrostatic capacitive sensor and photoelectric sensor arranged adjacent to each other, and the cylinder rejection assembly and proximity switch sensor arranged adjacent to each other.

[0016] The defective product buffer rack is mounted on the other side of the belt conveyor via a bracket, and the cylinder rejection assembly and the defective product buffer rack are arranged opposite to each other.

[0017] The product mold assembly is used to place small-capacity bottled products, and the product mold assembly moves along the belt conveyor line;

[0018] The drive motor, electrostatic capacitance sensor, photoelectric sensor, cylinder rejection assembly, and proximity switch sensor of the belt conveyor communicate with the controller.

[0019] The above-mentioned empty bottle detection mechanism for small-capacity bottled products includes a cylinder and a push rod connected thereto. The cylinder is mounted on one side of the belt conveyor line via a bracket, and the cylinder communicates with the controller.

[0020] The above-mentioned empty bottle detection mechanism for small-capacity bottled products includes a product mold assembly comprising a base and a row of product placement slots disposed thereon, wherein a metal calibration block is disposed on the base.

[0021] In the above-mentioned empty bottle detection mechanism for small-capacity bottled products, the electrostatic capacitance sensor is located directly above the belt conveyor line.

[0022] The empty bottle detection mechanism for small-capacity bottled products of this utility model has the following advantages:

[0023] (1) The liquid level or presence or absence of liquid can be distinguished by the capacitance formed between the electrode and the product being tested. Compared with the traditional weighing method, the equipment supporting facilities can be greatly reduced, which is more stable and significantly reduces equipment costs. The detection efficiency is 5-10 times that of manual detection, and the cost is 1 / 10 to 1 / 20 of the traditional mechanical equipment weighing method.

[0024] (2) The mechanical structure is simple and can be adjusted for various products. It can change product specifications in a short period of time and is suitable for use in multi-product manufacturing plants. Attached Figure Description

[0025] Figure 1 A three-dimensional structural diagram of the empty bottle detection mechanism for small-capacity bottled products according to this utility model;

[0026] Figure 2 This is a front view of the empty bottle detection mechanism for small-capacity bottled products according to this utility model.

[0027] Figure 3 This is a top view of the empty bottle detection mechanism for small-capacity bottled products according to this utility model;

[0028] Figure 4 This is a side view of the empty bottle detection mechanism for small-capacity bottled products according to this utility model;

[0029] Figure 5 Electrical schematic diagram of the empty bottle detection mechanism for small-capacity bottled products of this utility model;

[0030] Figure 6 This is a schematic diagram of a capacitive sensor. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of this utility model, its specific embodiments are described in detail below with reference to the accompanying drawings:

[0032] Please see Figures 1 to 6 The preferred embodiment of this utility model is an empty bottle detection mechanism for small-capacity bottled products, comprising a belt conveyor 1, a capacitive sensor 3, a photoelectric sensor 4, a cylinder rejection assembly 5, a proximity switch sensor 6, a defective product buffer rack 7, a product mold assembly 8, and a controller 9.

[0033] Limit guardrails 2 are installed on the belt conveyor line 1 along its conveying direction. The limit guardrails 2 are used to limit the product mold assembly 8 to the left and right to ensure that the product does not deviate during the forward movement.

[0034] The electrostatic capacitive sensor 3, photoelectric sensor 4, cylinder rejection assembly 5, and proximity switch sensor 6 are sequentially mounted on one side of the belt conveyor line 1 along the conveying direction via a bracket. The electrostatic capacitive sensor 3 and photoelectric sensor 4 are arranged adjacent to each other, with the electrostatic capacitive sensor 3 located directly above the belt conveyor line 1. The cylinder rejection assembly 5 and proximity switch sensor 6 are arranged adjacent to each other.

[0035] The defective product buffer rack 7 is set on the other side of the belt conveyor line 1 by a bracket, and the cylinder rejection assembly 5 and the defective product buffer rack 7 are set opposite to each other; the product mold assembly 8 is used to place small-capacity bottled products, and the product mold assembly 8 moves along the belt conveyor line 1.

[0036] The cylinder rejection assembly 5 includes a cylinder 51 and a push rod 52 connected thereto. The cylinder 51 is mounted on one side of the belt conveyor 1 via a bracket.

[0037] The drive motor 11 of the belt conveyor 1, the electrostatic capacitive sensor 3, the photoelectric sensor 4, the cylinder 51 of the cylinder rejection assembly 5, and the proximity switch sensor 6 communicate with the controller 9 respectively.

[0038] Product mold assembly 8 includes a base 81 and a row of product placement slots 82 disposed thereon. The base 81 is provided with a metal calibration block to facilitate the proximity switch sensor 6 in sensing the approach of the product. In this embodiment, there are 10 product placement slots 82, which can hold 10 products at the same time.

[0039] In this utility model, the empty bottle detection mechanism for small-capacity bottled products, during processing, involves the product mold assembly 8 carrying the product 10 completing corresponding processes at other workstations before entering the belt conveyor line 1. Limiting guardrails 2 on the belt conveyor line 1 provide left and right limits to the product mold assembly 8, ensuring the product does not deviate during its forward movement. When the product mold assembly 8 moves below the electrostatic capacitance sensor 3, the product triggers the photoelectric sensor 4. After being triggered, the photoelectric sensor 4 sends a feedback signal to the controller 9. The controller 9 then controls the electrostatic capacitance sensor 3 to perform detection. After detecting the product, the electrostatic capacitance sensor 3 sends the detection information to the controller 9. If there is material inside the bottle or other substances inside the bottle... When the material reaches a certain height, the product is considered qualified; otherwise, it is considered unqualified. Each mold has multiple products. If any one or several of these products are unqualified, all products on the entire mold are considered unqualified. If unqualified, when the product mold assembly 8 passes the proximity switch sensor 6, the metal calibration block on the product mold assembly 8 triggers the proximity switch sensor 6. The proximity switch sensor 6 feeds back a proximity signal to the controller 9. The controller 9 controls the cylinder 51 of the cylinder rejection assembly 5 to push the product mold assembly 8 onto the defective product buffer rack 7. If all products on the product mold assembly 8 are qualified, the product mold assembly directly enters the subsequent station via the belt conveyor line 1.

[0040] Please see again Figure 6 The specific working principle of the capacitive capacitance sensor 3 is as follows: A positive electrode 31 is formed at the end of the sensor 3. Electrons ionized in the conductive liquid are attracted to the positive electrode and concentrate towards it, forming a negative electrode and generating a capacitance C. The level of liquid in the sealed bottle 10, or the presence or absence of liquid, directly causes a change in capacitance. The vibration circuit 32 within the capacitive capacitance sensor 3 distinguishes between the level of liquid in the sealed bottle and the presence or absence of liquid based on the change in capacitance. The greater the electrophoretic conductivity (ease of classification) of an object, the greater its capacitive capacitance, making it easier to detect and resulting in a higher detection zero density.

[0041] In summary, the empty bottle detection mechanism for small-capacity bottled products of this utility model distinguishes whether there is product or the level of liquid in a sealed, opaque product by detecting the capacitance generated between the product and the electrode. In conjunction with other sensors and mechanisms, the product is rejected to ensure product quality and improve detection efficiency.

[0042] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. An empty bottle detection mechanism for small-capacity bottled products, characterized in that, This includes a belt conveyor, electrostatic capacitance sensor, photoelectric sensor, cylinder rejection assembly, proximity switch sensor, defective product buffer rack, product mold assembly, and controller, among which: Limit guardrails are installed along the conveying direction of the belt conveyor. The electrostatic capacitive sensor, photoelectric sensor, cylinder rejection assembly, and proximity switch sensor are sequentially mounted on one side of the belt conveyor line via a bracket along the conveying direction, with the electrostatic capacitive sensor and photoelectric sensor arranged adjacent to each other, and the cylinder rejection assembly and proximity switch sensor arranged adjacent to each other. The defective product buffer rack is mounted on the other side of the belt conveyor via a bracket, and the cylinder rejection assembly and the defective product buffer rack are arranged opposite to each other. The product mold assembly is used to place small-capacity bottled products, and the product mold assembly moves along the belt conveyor line; The drive motor, electrostatic capacitance sensor, photoelectric sensor, cylinder rejection assembly, and proximity switch sensor of the belt conveyor communicate with the controller.

2. The empty bottle detection mechanism for small-capacity bottled products according to claim 1, characterized in that, The cylinder rejection assembly includes a cylinder and a push rod connected thereto. The cylinder is mounted on one side of the belt conveyor via a bracket, and the cylinder communicates with the controller.

3. The empty bottle detection mechanism for small-capacity bottled products according to claim 1, characterized in that, The product mold assembly includes a base and a row of product placement slots disposed thereon, and a metal calibration block is disposed on the base.

4. The empty bottle detection mechanism for small-capacity bottled products according to claim 1, characterized in that, The electrostatic capacitance sensor is located directly above the belt conveyor.

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